package org.apache.solr.response.transform;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Set;

import org.apache.lucene.document.Field;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.schema.FieldType;
import org.apache.solr.schema.SchemaField;

/**
 * Used to mark whether a document has been elevated or not
 * 
 * @since solr 4.0
 */
public class ElevatedMarkerFactory extends TransformerFactory {
	@Override
	public DocTransformer create(String field, SolrParams params,
			SolrQueryRequest req) {
		SchemaField uniqueKeyField = req.getSchema().getUniqueKeyField();
		String idfield = uniqueKeyField.getName();
		return new MarkTransformer(field, idfield, uniqueKeyField.getType());
	}
}

class MarkTransformer extends BaseEditorialTransformer {

	MarkTransformer(String name, String idFieldName, FieldType ft) {
		super(name, idFieldName, ft);
	}

	@Override
	protected Set<String> getIdSet() {
		return (Set<String>) context.req.getContext().get("BOOSTED");
	}
}
